Iowa Ham Balls

I feel like the first sentence in this description should be something like..."You know you're from Iowa when..." You have a recipe for Ham Balls. This makes about two 9x13 pans of ham balls - so I generally freeze half of the meat mixture. We like more of the sauce, so I use the entire sauce recipe for one pan.

4 pounds - Ground Ham
2 pounds - ground Beef
3 eggs (beaten)
2 1/4 cups - Milk
3 cups - Graham Cracker Crumbs
2 cans - Tomato Soup
3/4 cup Vinegar
2.5 cups - packed Brown Sugar
1 tsp - Yellow Mustard

Combine first 5 ingredients and using a 1/3 measuring cup - form into balls. Place into 9x13 pan. Prepare sauce with remaining ingredients and pour over balls. Bake at 325 for 1 hour - basting frequently.